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Looks easy but OA puzzles me...

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Looks easy but OA puzzles me...

by cramya » Sat May 09, 2009 4:22 pm
If n is a positive integer is n equal to 100?
(1)sqrt(n) >9
(2) sqrt(n)>11

[spoiler]OA : Given as E[/spoiler]

I would go with B and may be I am having a brain freeze.....

Source: Another gmat forum
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by chetanojha » Sat May 09, 2009 8:37 pm
Looks B to me as well.
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by cramya » Sat May 09, 2009 8:59 pm
Thanks Ojha.
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Re: Looks easy but OA puzzles me...

by kic883 » Sat May 09, 2009 9:30 pm
cramya wrote:If n is a positive integer is n equal to 100?
(1)sqrt(n) >9
(2) sqrt(n)>11

[spoiler]OA : Given as E[/spoiler]

I would go with B and may be I am having a brain freeze.....

Source: Another gmat forum
My answer is B as well.
Something wrong with the OA ?
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Re: Looks easy but OA puzzles me...

by Vemuri » Sun May 10, 2009 5:13 am
Hi Cramya,

You are right. The answer should be B.
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Re: Looks easy but OA puzzles me...

by success1111 » Mon May 11, 2009 5:46 am
cramya wrote:If n is a positive integer is n equal to 100?
(1)sqrt(n) >9
(2) sqrt(n)>11

[spoiler]OA : Given as E[/spoiler]

I would go with B and may be I am having a brain freeze.....

Source: Another gmat forum

I am surprised you guys were chosing B.
The question is asking "is a positive integer is n equal to 100" not greater than 100.


1) Sqrt(n) could be 10 i.e 100 or 11 i.e 121,12 i.e 144, 13 i.e 169 so insufficient

2) Similarly, sqrt (n) could be 12 i.e 144, or 13 i.e 169

The best answer is E
Trust but verify.
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by Mr2Bits » Mon May 11, 2009 7:21 am
I get E pretty clearly as well. Unless their is a typo in answer (2) without a doubt E. :?:
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by schumi_gmat » Mon May 11, 2009 8:56 am
2) Similarly, sqrt (n) could be 12 i.e 144, or 13 i.e 169
This clearly tells that n not equal to 100.
Answer is No

and hence B
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by dmateer25 » Mon May 11, 2009 9:59 am
I found the question posted on two forums other than BTG.

on testmagic, they have statement 2 as (2) sqrt(n)>11.

If this is the case then the answer would be B.

On gmatclub, the 2nd statement is posted as (2) sqrt(n)<11.

If this is the case, then the answer would be E because n could be anything less than 121 but greater than 81.
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by cramya » Mon May 11, 2009 6:41 pm
Thanks for the clarification, Dmateer.

Regards,
CR
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by lunarpower » Wed May 13, 2009 3:21 am
dmateer25 wrote:I found the question posted on two forums other than BTG.

on testmagic, they have statement 2 as (2) sqrt(n)>11.

If this is the case then the answer would be B.

On gmatclub, the 2nd statement is posted as (2) sqrt(n)<11.

If this is the case, then the answer would be E because n could be anything less than 121 but greater than 81.
heh.

goes to show. these are among the most common, and most insidious, of mistakes.

ALWAYS double- and triple-check inequality signs. you'd be surprised by how easy it is to mistake ">" for "<", especially under test pressure.

there are some things for which it's ok to miss points. this, however, is not one of them.
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